I was wondering why I was suddenly seeing massive drops in battery levels overnight. Thanks for posting the link to the orig story, I was about to do the same. Hopefully FB gets their sh!t together & rolls out an update... stat.

Same here - zero sleep time with 1.3 installed. It took me a few hours of trial and error to isolate the problem.

Easy way to test - Go to settings > About > Battery and look at the awake time. Now turn your screen off and set it down for a few minutes. When you turn it back on and look at the awake time again, it SHOULD be pretty much the same as when you turned the screen off (i.e. it shouldn't advance the full X minutes that you left the phone sitting..."asleep").

Experienced the same thing, massive battery drain right after i installed, but the problem went away after I turned my phone off and on again. Actual shut down not sleep. Only problem I have is it FCs every time I hit the Friends button.